Ansible callback plugin for human-readable result logging - http://blog.cliffano.com/2014/04/06/human-readable-ansible-playbook-log-output-using-callback-plugin/

human_log.py

# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

# Inspired from: https://gist.github.com/cliffano/9868180
# Improved and made compatible with Ansible v2

from __future__ import (absolute_import, division, print_function)
__metaclass__ = type

from ansible.plugins.callback import CallbackBase
try:
    import simplejson as json
except ImportError:
    import json

# Fields to reformat output for
FIELDS = ['cmd', 'command', 'start', 'end', 'delta', 'msg', 'stdout',
          'stderr', 'results']


class CallbackModule(CallbackBase):
    def human_log(self, data):
        if type(data) == dict:
            for field in FIELDS:
                if field in data.keys() and data[field]:
                    output = self._format_output(data[field])
                    print("\n{0}: {1}".format(field, output.replace("\\n","\n")))

    def _format_output(self, output):
        # Strip unicode
        if type(output) == unicode:
            output = output.encode('ascii', 'replace')

        # If output is a dict
        if type(output) == dict:
            return json.dumps(output, indent=2)

        # If output is a list of dicts
        if type(output) == list and type(output[0]) == dict:
            # This gets a little complicated because it potentially means
            # nested results, usually because of with_items.
            real_output = list()
            for index, item in enumerate(output):
                copy = item
                if type(item) == dict:
                    for field in FIELDS:
                        if field in item.keys():
                            copy[field] = self._format_output(item[field])
                real_output.append(copy)
            return json.dumps(output, indent=2)

        # If output is a list of strings
        if type(output) == list and type(output[0]) != dict:
            # Strip newline characters
            real_output = list()
            for item in output:
                if "\n" in item:
                    for string in item.split("\n"):
                        real_output.append(string)
                else:
                    real_output.append(item)

            # Reformat lists with line breaks only if the total length is
            # >75 chars
            if len("".join(real_output)) > 75:
                return "\n" + "\n".join(real_output)
            else:
                return " ".join(real_output)

        # Otherwise it's a string, just return it
        return output

    def on_any(self, *args, **kwargs):
        pass

    def runner_on_failed(self, host, res, ignore_errors=False):
        self.human_log(res)

    def runner_on_ok(self, host, res):
        self.human_log(res)


    def runner_on_error(self, host, msg):
        pass

    def runner_on_skipped(self, host, item=None):
        pass

    def runner_on_unreachable(self, host, res):
        self.human_log(res)

    def runner_on_no_hosts(self):
        pass

    def runner_on_async_poll(self, host, res, jid, clock):
        self.human_log(res)

    def runner_on_async_ok(self, host, res, jid):
        self.human_log(res)

    def runner_on_async_failed(self, host, res, jid):
        self.human_log(res)

    def playbook_on_start(self):
        pass

    def playbook_on_notify(self, host, handler):
        pass

    def playbook_on_no_hosts_matched(self):
        pass

    def playbook_on_no_hosts_remaining(self):
        pass

    def playbook_on_task_start(self, name, is_conditional):
        pass

    def playbook_on_vars_prompt(self, varname, private=True, prompt=None,
                                encrypt=None, confirm=False, salt_size=None,
                                salt=None, default=None):
        pass

    def playbook_on_setup(self):
        pass

    def playbook_on_import_for_host(self, host, imported_file):
        pass

    def playbook_on_not_import_for_host(self, host, missing_file):
        pass

    def playbook_on_play_start(self, pattern):
        pass

    def playbook_on_stats(self, stats):
        pass

Nice works 4 me, but my install pm2-syslog task returns something quite ugly

????????????????????????????????????????????????????????????????????????????????????????
? App name ? id ? mode ? pid ? status ? restart ? uptime ? cpu ? mem ? user ? watching ?
????????????????????????????????????????????????????????????????????????????????????????
 Module activated
???????????????????????????????????????????????????????????????????????????????????
? Module     ? version ? target PID ? status ? restart ? cpu ? memory      ? user ?
???????????????????????????????????????????????????????????????????????????????????
? pm2-syslog ? N/A     ? N/A        ? online ? 0       ? 0%  ? 11.625 MB   ? node ?
???????????????????????????????????????????????????????????????????????????????????
 Use `pm2 show <id|name>` to get more details about an app

Anybody some ideas to fix those ascii characters?

EDIT:

That solution works. Human readable and with UTF8 special ascii characters.
https://github.com/n0ts/ansible-human_log/blob/master/human_log.py

stdout gets properly formatted but (yum) results does not. Any ideas?

worth noting that this callback plugin may no longer be needed as the debug plugin can be used by default now, I have just switched to using that instead:

ansible/ansible#27078 (comment)
https://github.com/ansible/ansible/blob/v2.4.3.0-1/lib/ansible/plugins/callback/debug.py
https://gist.github.com/cliffano/9868180#gistcomment-1915662